489637823123 has 16 divisors (see below), whose sum is σ = 510397735680. Its totient is φ = 469307153376.

The previous prime is 489637823063. The next prime is 489637823141. The reversal of 489637823123 is 321328736984.

It is a cyclic number.

It is not a de Polignac number, because 489637823123 - 2²⁰ = 489636774547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489637823183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835898 + ... + 1295376.

It is an arithmetic number, because the mean of its divisors is an integer number (31899858480).

Almost surely, 2^489637823123 is an apocalyptic number.

489637823123 is a deficient number, since it is larger than the sum of its proper divisors (20759912557).

489637823123 is a wasteful number, since it uses less digits than its factorization.

489637823123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459946.

The product of its digits is 10450944, while the sum is 56.

The spelling of 489637823123 in words is "four hundred eighty-nine billion, six hundred thirty-seven million, eight hundred twenty-three thousand, one hundred twenty-three".